SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Identifier key
    Identifier ref_valueU64
    Identifier valueU64
    Function minus (alias dU64) (children 1)
     ExpressionList (children 2)
      Identifier ref_valueU64
      Identifier valueU64
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier codecTest
   Function notEquals (children 1)
    ExpressionList (children 2)
     Identifier dU64
     Literal UInt64_0
   Literal UInt64_10
